pvjc20/du6/program.c

#include <stdio.h>
#include <string.h>

int main(){
    //Read num of lines
    int tmpCh;
    tmpCh = getc(stdin);
    if(tmpCh < '1' || tmpCh > '9'){
        puts("Nespravny vstup");
        return 0;
    }
    ungetc(tmpCh, stdin);

    int lines;
    scanf("%d", &lines);
    scanf("%*c");

    //Read names
    int realLines = 0;
    char names[200][200];
    for(int i = 0; i < 200; i++){
        tmpCh = getc(stdin);
        if(tmpCh == '\n' && i == 0){
            puts("Ziadne prihlasky");
            return 0;
        }
        else if(tmpCh == '\n') break;
        ungetc(tmpCh, stdin);
        scanf("%[^\n]", names[i]);
        realLines++;
        tmpCh = getc(stdin);
        if(tmpCh == EOF) break;
    }

    //Filter names
    char newNames[200][200];
    int newLines = 0;
    for(int i = 0; i < realLines; i++){
        int check = 1;
        for(int q = 0; q < newLines; q++){
            if(strcmp(names[i], newNames[q]) == 0){
                check = 0;
                break;
            }
        }
        if(check == 1){
            strcpy(newNames[newLines], names[i]);
            newLines++;
        }
    }
    
    //Sort names
    for(int d = 0; d < newLines - 1; d++){
        for(int i = 0; i < newLines - 1; i++){
            int test = 0;
            for(int q = 0; q < newLines; q++){
                if(newNames[i][q] > newNames[i + 1][q] || newNames[i][q] == -59){
                    char tmpName[50];
                    strcpy(tmpName, newNames[i]);
                    strcpy(newNames[i], newNames[i + 1]);
                    strcpy(newNames[i + 1], tmpName);
                    break;
                }
                else if(newNames[i][q] < newNames[i + 1][q]){
                    break;
                }
            }
        }
    }

    //Print names
    if(newLines <= lines){
        puts("Prijati studenti:");
        for(int i = 0; i < newLines; i++){
            printf("%s\n", newNames[i]); 
        }
    }
    else{
        puts("Prijati studenti:");
        for(int i = 0; i < lines; i++){
            printf("%s\n", newNames[i]); 
        }
        puts("Neprijati studenti:");
        for(int i = lines; i < newLines; i++){
            printf("%s\n", newNames[i]); 
        }
    }
}